TROUBLE CODE P0128

  • Tiny
  • Donald81
  • 2007 Ford Fusion
  • 4 CYL
  • FWD
  • automatic
  • 90,000 miles

Car turns over but takes it very many times to finally start. Read the codes for the check engine light being on and it reads, check engine code reads coolant thermostat coolant temperature beloiw thermostat temp

Do you
have the same problem?
Yes
No
Tuesday, January 25th, 2011 AT 12:40 AM

7 Replies

  • Tiny
  • rasmataz
  • Member

Check and test the engine coolant temperature sensor-

Was this
answer
helpful?
Yes
No
Tuesday, January 25th, 2011 AT 12:57 AM
  • Tiny
  • BMRFIXIT
  • Expert
  • 19,553 posts

Best is you can supply us with the codes so we can help in pin pointing the troubled area
Coolant below thermostat temp is an indication of a bad thermostat (open)and need to be replaced

Was this
answer
helpful?
Yes
No
Tuesday, January 25th, 2011 AT 1:35 AM
  • Tiny
  • Donald81
  • Member

The code is P0128 MOD $00 Coolant Temp Below Thermostat Regulating Temp

Was this
answer
helpful?
Yes
No
Tuesday, January 25th, 2011 AT 4:29 AM
  • Tiny
  • Donald81
  • Member

P0128 MOD $00 Coolant Temp Below Thermostat Regulating Temp

Was this
answer
helpful?
Yes
No
Tuesday, January 25th, 2011 AT 4:30 AM
  • Tiny
  • d2ofakind
  • Member

I wouldnt be to concerned with the Thermostat, you have a much bigger problem, it is that oval on the front of the car that says ford! Sorry man I couldnt pass it up.

Was this
answer
helpful?
Yes
No
Tuesday, January 25th, 2011 AT 4:39 AM
  • Tiny
  • Donald81
  • Member

Very Funny, Mr. Driskell!

Was this
answer
helpful?
Yes
No
Tuesday, January 25th, 2011 AT 3:22 PM
  • Tiny
  • BMRFIXIT
  • Expert
  • 19,553 posts

P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) Detailed Description
Indicates that the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine.

Possible causes :-
Insufficient warm up time
Low engine coolant level
Leaking or stuck open thermostat
Inoperative engine coolant temperature (ECT) sensor
Inoperative cylinder head temperature (CHT) sensor
WE FIND IT VERY COMMON FOR THE THERMOSTAT TO BE AT FAULT
CHECK COOLANT 1ST

Was this
answer
helpful?
Yes
No
Tuesday, January 25th, 2011 AT 3:47 PM

Please login or register to post a reply.

Similar Questions